var tabFilter, menu = [], liIndex, curNav, delMenu;
layui.define(["common", "element", "jquery"], function (exports) {
    var element = layui.element,
        $ = layui.jquery,
        common = layui.common,
        layId,
        Tab = function () {
            this.tabConfig = {
                closed: true,
                openTabNum: 10,
                tabFilter: "bodyTab"
            }
        };
    //显示左侧菜单
    if ($(".navBar>ul").length <= 0) {
        common.post("loadMenu", {}, function (res) {
            $(".navBar").html(navBar(res)).height($(window).height() - 230);
            element.init();  //初始化页面元素
            $(window).resize(function () {
                $(".navBar").height($(window).height() - 230);
            })
        });
    }

    //菜单dom结果渲染
    function navBar(data) {
        var ulHtml = '<ul class="layui-nav layui-nav-tree">';
        for (var i = 0; i < data.length; i++) {
            if(i==0){
                //加载默认主页显示url
                var main_url=data[i].href;
                $(".clildFrame iframe").attr("src",main_url);
            }
            if (data[i].spread) {
                ulHtml += '<li class="layui-nav-item layui-nav-itemed">';
            } else {
                ulHtml += '<li class="layui-nav-item">';
            }
            if (data[i].children != undefined && data[i].children.length > 0) {
                ulHtml += '<a href="javascript:;">';
                if (data[i].icon != undefined && data[i].icon != '') {
                    ulHtml += '<i class="layui-icon ' + data[i].icon + '" data-icon="' + data[i].icon + '"></i>';
                }
                ulHtml += '<cite>' + data[i].title + '</cite>';
                ulHtml += '<span class="layui-nav-more"></span>';
                ulHtml += '</a>';
                ulHtml += '<dl class="layui-nav-child">';
                for (var j = 0; j < data[i].children.length; j++) {
                    ulHtml += '<dd><a href="javascript:;" data-url="' + data[i].children[j].href + '">';
                    if (data[i].children[j].icon != undefined && data[i].children[j].icon != '') {
                        ulHtml += '<i class="layui-icon ' + data[i].children[j].icon + '" data-icon="' + data[i].children[j].icon + '"></i>';
                    }
                    ulHtml += '<cite>' + data[i].children[j].title + '</cite></a></dd>';
                }
                ulHtml += "</dl>"
            } else {
                ulHtml += '<a href="javascript:;" data-url="' + data[i].href + '">';
                if (data[i].icon != undefined && data[i].icon != '') {
                    ulHtml += '<i class="layui-icon ' + data[i].icon + '" data-icon="' + data[i].icon + '"></i>';
                }
                ulHtml += '<cite>' + data[i].title + '</cite></a>';
            }
            ulHtml += '</li>'
        }
        ulHtml += '</ul>';
        return ulHtml;
    }

    //参数设置
    Tab.prototype.set = function (option) {
        var _this = this;
        $.extend(true, _this.tabConfig, option);
        return _this;
    };

    //通过title获取lay-id
    Tab.prototype.getLayId = function (title) {
        $(".layui-tab-title.top_tab li").each(function () {
            if ($(this).find("cite").text() == title) {
                layId = $(this).attr("lay-id");
            }
        });
        return layId;
    };
    //通过title判断tab是否存在
    Tab.prototype.hasTab = function (title) {
        var tabIndex = -1;
        $(".layui-tab-title.top_tab li").each(function () {
            if ($(this).find("cite").text() == title) {
                tabIndex = 1;
            }
        });
        return tabIndex;
    };

    //右侧内容tab操作
    var tabIdIndex = 0;
    Tab.prototype.tabAdd = function (_this) {
        if (window.sessionStorage.getItem("menu")) {
            menu = JSON.parse(window.sessionStorage.getItem("menu"));
        }
        var that = this;
        var openTabNum = that.tabConfig.openTabNum;
        tabFilter = that.tabConfig.tabFilter;
        if (_this.find("i.layui-icon").attr("data-icon") != undefined) {
            if (that.hasTab(_this.find("cite").text()) == -1 && _this.siblings("dl.layui-nav-child").length == 0) {
                if ($(".layui-tab-title.top_tab li").length == openTabNum) {
                    layer.msg('只能同时打开' + openTabNum + '个选项卡哦。不然系统会卡的！');
                    return;
                }
                tabIdIndex++;
                var icon = _this.find("i.layui-icon").attr("data-icon");
                var title = '';
                title += '<i class="layui-icon ' + icon + '"></i>';
                title += '<cite>' + _this.find("cite").text() + '</cite>';
                title += '<i class="layui-icon layui-unselect layui-tab-close" data-id="' + tabIdIndex + '">&#x1006;</i>';
                element.tabAdd(tabFilter, {
                    title: title,
                    content: "<iframe src='" + _this.attr("data-url") + "' data-id='" + tabIdIndex + "'></frame>",
                    id: new Date().getTime()
                });

                //当前窗口内容
                var curmenu = {
                    "icon": _this.find("i.layui-icon").attr("data-icon"),
                    "title": _this.find("cite").text(),
                    "href": _this.attr("data-url"),
                    "layId": new Date().getTime()
                };
                menu.push(curmenu);
                window.sessionStorage.setItem("menu", JSON.stringify(menu)); //打开的窗口
                window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));  //当前的窗口
                element.tabChange(tabFilter, that.getLayId(_this.find("cite").text()));
            } else {
                //当前窗口内容
                var curmenu = {
                    "icon": _this.find("i.layui-icon").attr("data-icon"),
                    "title": _this.find("cite").text(),
                    "href": _this.attr("data-url"),
                    "layId": new Date().getTime()
                };
                window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));  //当前的窗口
                element.tabChange(tabFilter, that.getLayId(_this.find("cite").text()));
            }
        }
    };
    $("body").on("click", ".top_tab li", function () {
        //切换后获取当前窗口的内容
        var menu = JSON.parse(window.sessionStorage.getItem("menu"));
        var curmenu = menu[$(this).index() - 1];
        if ($(this).index() == 0) {
            window.sessionStorage.setItem("curmenu", '');
        } else {
            window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));
            if (window.sessionStorage.getItem("curmenu") == "undefined") {
                //如果删除的不是当前选中的tab,则将curmenu设置成当前选中的tab
                if (curNav != JSON.stringify(delMenu)) {
                    window.sessionStorage.setItem("curmenu", curNav);
                } else {
                    window.sessionStorage.setItem("curmenu", JSON.stringify(menu[liIndex - 1]));
                }
            }
        }
        element.tabChange(tabFilter, $(this).attr("lay-id")).init();
    });

    //删除tab
    $("body").on("click", ".top_tab li i.layui-tab-close", function () {
        //删除tab后重置session中的menu和curmenu
        liIndex = $(this).parent("li").index();
        var menu = JSON.parse(window.sessionStorage.getItem("menu"));
        //获取被删除元素
        delMenu = menu[liIndex - 1];
        var curmenu = window.sessionStorage.getItem("curmenu") == "undefined" ? "undefined" : window.sessionStorage.getItem("curmenu") == "" ? '' : JSON.parse(window.sessionStorage.getItem("curmenu"));
        if (JSON.stringify(curmenu) != JSON.stringify(menu[liIndex - 1])) {  //如果删除的不是当前选中的tab
            curNav = JSON.stringify(curmenu);
        } else {
            if ($(this).parent("li").length > liIndex) {
                window.sessionStorage.setItem("curmenu", curmenu);
                curNav = curmenu;
            } else {
                window.sessionStorage.setItem("curmenu", JSON.stringify(menu[liIndex - 1]));
                curNav = JSON.stringify(menu[liIndex - 1]);
            }
        }
        menu.splice((liIndex - 1), 1);
        window.sessionStorage.setItem("menu", JSON.stringify(menu));
        element.tabDelete("bodyTab", $(this).parent("li").attr("lay-id")).init();
    });

    var bodyTab = new Tab();
    exports("bodyTab", function (option) {
        return bodyTab.set(option);
    });
});